The high-pitched part is generally the main theme of the lead guitar, and solo is also a part of it.
The bass part is played by a bass guitar (bass)
But if there is only high-pitched and low-pitched music, it will be extremely empty.
So the middle of the treble and bass is connected with the alto part and the alto part.
These two parts are played by rhythm guitarists.
The contents of accompaniment tapes are generally drums, bass and rhythm guitars.
The so-called accompaniment is to remove the main theme of a song's lead guitar.
Then let yourself play the main theme with the accompaniment!
This answer was recommended by the questioner.